Same bird as in XC454465. Source: Lisa Rae McMaster, Portland Oregon, with permission. Recording obtained from video (https://youtu.be/qsEvuvurL6g), with online audio converter (https://online-audio-converter.com/). Audio normalized to maximum amplitude -3.0 dB with Audacity. Observer notes: "‘My’ scrubby has been coming around for the last 7 or so years (only one to feed from my hand) and I swear this is the first time he/she has ‘sung’ to me. It’s been happening for the last few weeks...." "It’s so weird because I have been feeding this bird almost daily for years and have never noticed these sounds..." " I actually just found an old video on my phone dated 2010...so I’ve had a relationship with this bird for 9 years..."

Same bird as in XC454467. Source: Lisa Rae McMaster, Portland Oregon, with permission. Recording obtained from video (https://youtu.be/Fm5WwH07NfM), with online audio converter (https://online-audio-converter.com/). Audio normalized to maximum amplitude -3.0 dB with Audacity. Observer notes: "‘My’ scrubby has been coming around for the last 7 or so years (only one to feed from my hand) and I swear this is the first time he/she has ‘sung’ to me. It’s been happening for the last few weeks...." "It’s so weird because I have been feeding this bird almost daily for years and have never noticed these sounds..." " I actually just found an old video on my phone dated 2010...so I’ve had a relationship with this bird for 9 years..."

Recorded in a deep canyon a the edge of chaparral after I played a spotted owl recording. The birds had been vocalizing spontaneously a couple of minutes earlier. The distance to the birds was roughly 40 meters.

Equipment: Sony PCM-M10 and a Sennheiser ME67.
Edits to the file: trimmed at the beginning.

Recorded in a deep canyon a the edge of chaparral after I played a spotted owl recording. The birds had been vocalizing spontaneously a couple of minutes earlier. The distance to the birds was roughly 40 meters.

Equipment: Sony PCM-M10 and a Sennheiser ME67.
Edits to the file: trimmed at the beginning.

A small bird was seen in the high pines and and in the valley oaks, I thought it could have been a nuthatch, but did not get a good look at it. Same as in XC481212 but came closer but still not very good view.

The high pitched call has been identified as American Bushtit after discussion. Thanks for the help with identification.